Question

The radius and slant height of cone are in a ratio 7:13 and its CSA is 286 cm sq fing its radius

Answer 1

see the solution above.

Answer 2

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radius (r) = 7x

slant height (L) = 13x

C.S.A of cone = πrl

286 =22/7 × 7x ×13x
286 = 286x^2
x^2 = 286/286
x^2 = 1
x = 1

so, we get .......

radius (r) = 7x = 7(1) =7cm

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